1, the corporate seal can replace the signature. The seal of the legal representative has been filed with the Public Security Bureau. If there is any objection to the authenticity of the signature, you can apply for judicial expertise to distinguish the authenticity. Generally, if there are no special requirements, the company's contracts or other documents can be stamped with the official seal.

2. Legal basis: Article 490th of the Civil Code of People's Republic of China (PRC).

If the parties enter into a contract in the form of a contract, the contract shall be established when the parties sign, seal or press their fingerprints. Before signing, sealing or fingerprinting, one party has fulfilled its main obligations, and the contract is established when the other party accepts it.

A contract shall be concluded in written form as stipulated by laws, administrative regulations or agreed by the parties. If the parties do not do this in writing, but one party has fulfilled its main obligations and the other party accepts it, the contract is established.

Second, how to deal with the loss of corporate seals?

The process of handling the loss of legal person's private seal is as follows:

1. Go to the industrial and commercial bureau to go through the formalities of seal loss, and go to the public security bureau with the certificate issued by the industrial and commercial bureau;

2. Go to the Public Security Bureau for chapter change procedures, including loss procedures, chapter change procedures and re-engraving procedures;

3. The original seal will be invalid in the newspaper;

4. Obtain a new chapter to the public security, industry and commerce for the record, and go through the cancellation procedures;

5. The seals of banks, tax authorities, enterprises and relevant business units are put on record.